When we think about the liberation of the Nazi concentration camps in Europe by American troops, we realize that sometimes intervention is necessary and important. However, sending troops into any little or big battle another nation is having is wrong and usually we do it for reasons that are not readily known on the surface.
There are several hot spots around the world that threaten to erupt into war. We should send peace keepers to prevent a full scale war from happening. In the past, we have regretted when we had the chance to prevent genocide or the large scale loss of life. We should use our resources to protect peace.